The Parallax of tj Cassiojyeise. 319 



Table T. — Parallax Equations. 

 Comparison Stars g and h. 



2 z;2=23.8o 



Normal Equations. 

 -|-2o.ooooJc +15.2600/ — 6.58oo7r -j- 9.4400 = o 

 +32.3736 — 9.7115 +1.1300 = 

 + 11.4706 — 21.2136 ^ o 



Solution. 



Ill units of 2(1 dec. place. Iii Arc. 



// // 



TT ^ + 2.3631 =fc 0.2780 TT = 4- 0.6619 ±0.0779 



J = + 0.8277 ± 0.1753 J = + 0.2318 ±0.0491 



X = — o. 1459 ± o. 1760 X ^ — 0.4087 ±0.0493 



Scale. Arc. 



Probable error of one equation = ±0.798 = ±0^^.274 



